package com.loan.common.utils;

import cn.hutool.core.date.DateUnit;
import cn.hutool.core.date.DateUtil;
import cn.hutool.core.date.Month;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

/**
 * 时间工具类
 *
 * @author lanling
 */
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {

    public static final String YYYY = "yyyy";

    public static final String YYYY_MM = "yyyy-MM";

    public static final String YYYY_MM_DD = "yyyy-MM-dd";

    public static final String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static final String[] PARSE_PATTERNS = {
        "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
        "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
        "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), PARSE_PATTERNS);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算相差天数
     */
    public static int differentDaysByMillisecond(Date date1, Date date2) {
        return Math.abs((int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24)));
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    /**
     * 增加 LocalDateTime ==> Date
     */
    public static Date toDate(LocalDateTime temporalAccessor) {
        ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 增加 LocalDate ==> Date
     */
    public static Date toDate(LocalDate temporalAccessor) {
        LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
        ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 指定时间的开始时间
     * @param str
     * @return
     */
    public static String toBeginDateByDay(Object str){
        if (str == null) {
            return null;
        }
        return str.toString() + " 00:00:00";
    }

    /**
     * 指定时间的结束时间
     * @param str
     * @return
     */
    public static String toEndDateByDay(Object str){
        if (str == null) {
            return null;
        }
        return str.toString() + " 23:59:59";
    }

    /**
     * 根据月份获取当月日期的时间列表
     * @param month 指定月份
     * @return
     */
    public static List<String> getDayByMonth(int month){
        List<String> list = new ArrayList<>();
        //当月最后一天
        int day = Month.getLastDay(month , false);
        for (int i = 1; i <= day;i++) {
            list.add("");
        }
        return list;
    }

    /**
     * 获取指定月份的天数
     * @param year
     * @param month
     * @return
     */
    public static int getDaysByYearMonth(int year, int month) {
        Calendar a = Calendar.getInstance();
        a.set(Calendar.YEAR, year);
        a.set(Calendar.MONTH, month);
        a.set(Calendar.DATE, 1);
        a.roll(Calendar.DATE, -1);
        int maxDate = a.get(Calendar.DATE);
        return maxDate;
    }

    public static List<String> dayReport(Date month) {
        List<String> list = new ArrayList<>();
        Calendar cal = Calendar.getInstance();
        cal.setTime(month);//month 为指定月份任意日期
        int year = cal.get(Calendar.YEAR);
        int m = cal.get(Calendar.MONTH);
        int dayNumOfMonth = getDaysByYearMonth(year, m);
        cal.set(Calendar.DAY_OF_MONTH, 1);// 从一号开始

        for (int i = 0; i < dayNumOfMonth; i++, cal.add(Calendar.DATE, 1)) {
            Date d = cal.getTime();
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
            String df = simpleDateFormat.format(d);
            list.add(df);
        }
        return list;
    }

    public static void main(String[] args) {
//        List<String> list = getDayByMonth(DateUtil.month(new Date()));
//        list.stream().forEach(System.out::println);
//        getDaysByYearMonth(DateUtil.year(new Date()),DateUtil.month(new Date()));
//        List<String> list = dayReport(DateUtil.lastMonth());
//        list.stream().forEach(System.out::println);
//        System.out.println("******************************************************");
//        List<String> list1 = dayReport(new Date());
//        list1.stream().forEach(System.out::println);
//        System.out.println(addMinutes(new Date(),-2));
        Date startDate = parseDate("2022-11-09");
        System.out.println(startDate.before(DateUtil.beginOfDay(new Date())));
        System.out.println( DateUtil.between(startDate, DateUtil.beginOfDay(new Date()), DateUnit.DAY));
    }
}
